<template>
  <div class="app-container">
    <upload-excel-component :on-success="handleSuccess" :before-upload="beforeUpload" />
    <el-table :data="tableData" border highlight-current-row style="width: 100%;margin-top:20px;">
      <el-table-column v-for="item of tableHeader" :key="item" :prop="item" :label="item" />
    </el-table>
  </div>
</template>

<script>
import UploadExcelComponent from '@/components/UploadExcel/index.vue'
import { importEmployees } from '@/api/employees'
import { formatExcelDate } from '@/utils'

export default {
  name: 'UploadExcel',
  components: { UploadExcelComponent },
  data() {
    return {
      tableData: [],
      tableHeader: []
    }
  },
  methods: {
    beforeUpload(file) {
      const isLt1M = file.size / 1024 / 1024 < 1

      if (isLt1M) {
        return true
      }

      this.$message({
        message: 'Please do not upload files larger than 1m in size.',
        type: 'warning'
      })
      return false
    },
    handleSuccess({ results, header }) {
      this.tableData = results
      this.tableHeader = header
      // 将读取的results数据发送到后端
      this.importEmployeesList(this.transZhkeyToEnkey(results))
      // 成功后返回原页面
      this.$router.back()
    },
    // 编写函数实现中文转英文
    transZhkeyToEnkey(data) {
      // 1. 映射对象，根据映射对象找英文的键
      const mapInfo = {
        '入职日期': 'timeOfEntry',
        '手机号': 'mobile',
        '姓名': 'username',
        '转正日期': 'correctionTime',
        '工号': 'workNumber',
        '部门': 'departmentName',
        '聘用形式': 'formOfEmployment'
      }
      return data.map(item => {
        const enObj = Object.keys(item).reduce((prev, Zhkey) => {
          // const enKey = mapInfo[Zhkey]
          if (mapInfo[Zhkey] === 'timeOfEntry' || mapInfo[Zhkey] === 'correctionTime') {
            // 将时间格式化处理
            prev[mapInfo[Zhkey]] = new Date(formatExcelDate(item[Zhkey]))
          } else {
            prev[mapInfo[Zhkey]] = item[Zhkey]
          }
          return prev
        }, {})
        return enObj
      })
    },
    // 批量导入函数
    async  importEmployeesList(data) {
      const res = await importEmployees(data)
      if (res.code !== 10000) return this.$message.error(res.message)
      this.$message.success(res.message)
    }

  }
}
</script>
